DDF-242 added clone() to arrays to prevent modifications to internal functionality

DDF-242 modified to use slf4j syntax

DDF-242 fixed logging and added unit test

clarified logging statement

DDF-242 added clone() to arrays to prevent modifications to internal functionality

DDF-242 modified to use slf4j syntax

DDF-242 fixed logging and added unit test

clarified logging statement

DDF-242 added test case