in src/main/java/org/apache/maven/resolver/internal/ant/tasks/Resolve.java [456:471]
public void setAttachments( String attachments )
{
if ( "sources".equals( attachments ) )
{
classifier = "*-sources";
}
else if ( "javadoc".equals( attachments ) )
{
classifier = "*-javadoc";
}
else
{
throw new BuildException( "The attachment type '" + attachments
+ "' is not defined, must be one of 'sources' or 'javadoc'" );
}
}