Duplications Manager

570274b86eaa5a0c65adcbde

@throws nullpointerexception if {@code elements} is null or contains anull element
@return this {@code builder} object
@description adds each element of {@code elements} to the {@code immutableset},ignoring duplicate elements (only the first duplicate element is added).

"public addAll( elements)"

file : https_github_com_google_guava_git/guava/src/com/google/common/collect/ImmutableSet.java

"public add(E elements)"

file : https_github_com_google_guava_git/guava/src/com/google/common/collect/ImmutableSet.java