IndexMutator extends DocumentMutatorImpl<DOC> implements 
        HasIdMutator<DOC>,    
        HasEnabledMutator<DOC>, 
        HasNameMutator<DOC> { public IndexColumn addNewIndexColumn() { return new IndexColumnImpl(document(), newDocument(document(), INDEX_COLUMNS)); } IndexMutator(DOC index); void setUnique(Boolean unique); IndexColumn addNewIndexColumn();  }
@Test void addNewIndexColumn() { assertNotNull(getMutatorInstance().addNewIndexColumn()); }