Copyright for maven-jaxb2-plugin source package in Bionic

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Maven JAXB 2.x Plugin Project
Source: https://github.com/highsource/maven-jaxb2-plugin

Files: *
Copyright: 2006-2014, Aleksei Valikov 
License: BSD-2-clause

Files: debian/*
Copyright: 2018, Jochen Sprickerhof 
License: BSD-2-clause

License: BSD-2-clause
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:
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 * Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.
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 * Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.
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 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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