The Apache Software License, Version 2.0

Copyright (c) 2017 The Apache Software Foundation.  All rights 
reserved.

TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

1. Definitions.

"License" shall mean the terms and conditions for use, reproduction, and 
distribution as defined by Sections 1 through 9 of this document.

"Licensor" shall mean the copyright owner or entity authorized by the 
copyright owner that is granting the License.

"Legal Entity" shall mean the union of the acting entity and all other 
entities that control, are controlled by, or are under common control 
with that entity. For the purposes of this definition, "control" means 
(i) the power, direct or indirect, to cause the direction or management 
of such entity, whether by contract or otherwise, or (ii) ownership of 
fifty percent (50%) or more of the outstanding shares, or (iii) beneficial 
ownership of such entity.

"You" (or "Your") shall mean an individual or Legal Entity exercising 
permissions granted by this License.

"Source" form shall mean the preferred form for making modifications, 
including but not limited to software source code, documentation source, 
and configuration files.

"Object" form shall mean any form resulting from mechanical transformation 
or translation of a Source form, including but not limited to compiled 
object code, generated documentation, and conversions to other media types.

"Work" shall mean the work of authorship, whether in Source or Object form, 
made available under the License, as indicated by a copyright notice that 
is included in or attached to the work (an example is provided in the 
Appendix below).

"Derivative Works" shall mean any work, whether in Source or Object form, 
that is based on (or derived from) the Work and for which the editorial 
revisions, annotations, elaborations, or other modifications represent, 
as a whole, an original work of authorship. For the purposes of this License, 
Derivative Works shall not include works that remain separable from, or 
merely link (or bind by name) to the interfaces of, the Work and Derivative 
Works thereof.

"Contribution" shall mean any work of authorship, including the original 
version of the Work and any modifications or additions to that Work or 
Derivative Works thereof, that is intentionally submitted to Licensor 
for inclusion in the Work by the copyright owner or by an individual or 
Legal Entity authorized to submit on behalf of the copyright owner. 
For the purposes of this definition, "submitted" means any form of 
electronic, verbal, or written communication sent to the Licensor or 
its representatives, including but not limited to communication on 
electronic mailing lists, source code control systems, and issue 
tracking systems that are managed by, or on behalf of, the Licensor for 
the purpose of discussing and improving the Work, but excluding 
communication that is conspicuously marked or otherwise designated in 
writing by the copyright owner as "Not a Contribution."

"Contributor" shall mean Licensor and any individual or Legal Entity 
on behalf of whom a Contribution has been received by Licensor and 
subsequently incorporated within the Work.

2. Grant of Copyright License. Subject to the terms and conditions of this 
License, each Contributor hereby grants to You a perpetual, worldwide, 
non-exclusive, no-charge, royalty-free, irrevocable copyright license to 
reproduce, prepare Derivative Works of, publicly display, publicly perform, 
sublicense, and distribute the Work and such Derivative Works in Source or 
Object form.

3. Grant of Patent License. Subject to the terms and conditions of this 
License, each Contributor hereby grants to You a perpetual, worldwide, 
non-exclusive, no-charge, royalty-free, irrevocable (except as stated in 
this section) patent license to make, have made, use, offer to sell, sell, 
import, and otherwise transfer the Work, where such license applies only to 
those patent claims licensable by such Contributor that are necessarily 
infringed by their Contribution(s) alone or by combination of their 
Contribution(s) with the Work to which such Contribution(s) was submitted. 
If You institute patent litigation against any entity (including a 
cross-claim or counterclaim in a lawsuit) alleging that the Work or a 
Contribution incorporated within the Work constitutes direct or contributory 
patent infringement, then any patent licenses granted to You under this 
License for that Work shall terminate as of the date such litigation is filed.

4. Redistribution. You may reproduce and distribute copies of the Work or 
Derivative Works thereof in any medium, with or without modifications, 
and in Source or Object form, provided that You meet the following conditions:
   a.You must give any other recipients of the Work or Derivative Works a copy 
     of this License; and
   b.You must cause any modified files to carry prominent notices stating 
     that You changed the files; and
   c.You must retain, in the Source form of any Derivative Works that You 
     distribute, all copyright, patent, trademark, and attribution notices 
     from the Source form of the Work, excluding those notices that do not 
     pertain to any part of the Derivative Works; and
   d.If the Work includes a "NOTICE" text file as part of its distribution, 
     then any Derivative Works that You distribute must include a readable 
     copy of the attribution notices contained within such NOTICE file, 
     excluding those notices that do not pertain to any part of the 
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     Derivative Works, if and wherever such third-party notices normally 
     appear. The contents of the NOTICE file are for informational purposes 
     only and do not modify the License. You may add Your own attribution 
     notices within Derivative Works that You distribute, alongside or as 
     an addendum to the NOTICE text from the Work, provided that such 
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     the License. 

     You may add Your own copyright statement to Your modifications and 
     may provide additional or different license terms and conditions for 
     use, reproduction, or distribution of Your modifications, or for any 
     such Derivative Works as a whole, provided Your use, reproduction, and 
     distribution of the Work otherwise complies with the conditions stated 
     in this License. 

5. Submission of Contributions. Unless You explicitly state otherwise, any 
Contribution intentionally submitted for inclusion in the Work by You to the 
Licensor shall be under the terms and conditions of this License, without any 
additional terms or conditions. Notwithstanding the above, nothing herein 
shall supersede or modify the terms of any separate license agreement you 
may have executed with Licensor regarding such Contributions.

6. Trademarks. This License does not grant permission to use the trade names, 
trademarks, service marks, or product names of the Licensor, except as 
required for reasonable and customary use in describing the origin of the 
Work and reproducing the content of the NOTICE file.

7. Disclaimer of Warranty. Unless required by applicable law or agreed to 
in writing, Licensor provides the Work (and each Contributor provides its 
Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF 
ANY KIND, either express or implied, including, without limitation, any 
warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or 
FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining 
the appropriateness of using or redistributing the Work and assume any risks 
associated with Your exercise of permissions under this License.

8. Limitation of Liability. In no event and under no legal theory, whether 
in tort (including negligence), contract, or otherwise, unless required by 
applicable law (such as deliberate and grossly negligent acts) or agreed to 
in writing, shall any Contributor be liable to You for damages, including 
any direct, indirect, special, incidental, or consequential damages of any 
character arising as a result of this License or out of the use or inability 
to use the Work (including but not limited to damages for loss of goodwill, 
work stoppage, computer failure or malfunction, or any and all other 
commercial damages or losses), even if such Contributor has been advised 
of the possibility of such damages.

9. Accepting Warranty or Additional Liability. While redistributing the Work 
or Derivative Works thereof, You may choose to offer, and charge a fee for, 
acceptance of support, warranty, indemnity, or other liability obligations 
and/or rights consistent with this License. However, in accepting such 
obligations, You may act only on Your own behalf and on Your sole 
responsibility, not on behalf of any other Contributor, and only if You 
agree to indemnify, defend, and hold each Contributor harmless for any 
liability incurred by, or claims asserted against, such Contributor by 
reason of your accepting any such warranty or additional liability.

END OF TERMS AND CONDITIONS
