Description of problem:
Package guacamole-client fails to build from source in EPEL 7.

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-javadoc-plugin:2.9:jar (attach-javadocs) on project guacamole-ext: MavenReportException: Error while creating archive:
[ERROR] Exit code: 1 - /builddir/build/BUILD/guacamole-client-0.8.4/guacamole-ext/src/main/java/org/glyptodon/guacamole/net/auth/Connection.java:66: error: @param name not found
[ERROR] * @param identifier The name to assign.
[ERROR] ^
[ERROR] /builddir/build/BUILD/guacamole-client-0.8.4/guacamole-ext/src/main/java/org/glyptodon/guacamole/net/auth/Connection.java:68: warning: no @param for name
[ERROR] public void setName(String name);
[ERROR] ^
[ERROR] /builddir/build/BUILD/guacamole-client-0.8.4/guacamole-ext/src/main/java/org/glyptodon/guacamole/net/auth/ConnectionGroup.java:66: error: @param name not found
[ERROR] * @param identifier The name to assign.
[ERROR] ^
[ERROR] /builddir/build/BUILD/guacamole-client-0.8.4/guacamole-ext/src/main/java/org/glyptodon/guacamole/net/auth/ConnectionGroup.java:68: warning: no @param for name
[ERROR] public void setName(String name);
[ERROR] ^
[ERROR] 
[ERROR] Command line was: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.121-0.b13.el7_3.x86_64/jre/../bin/javadoc @options @packages
[ERROR] 
[ERROR] Refer to the generated Javadoc files in '/builddir/build/BUILD/guacamole-client-0.8.4/guacamole-ext/target/apidocs' dir.
[ERROR] -> [Help 1]
Version-Release number of selected component (if applicable):
0.8.4-1.el7

Steps to Reproduce:
koji build --scratch epel7 guacamole-client-0.8.4-1.el7.src.rpm

Additional info:
This package is tracked by Koschei. See:
http://apps.fedoraproject.org/koschei/package/guacamole-client