question: a type-safe alternative to calling a.equals b . when using a.equals b , b may accidentally be a different class from a , in which case there will be no compiler warning and the result will always be false . this method requires both values to have compatible types and to be non-null . concode_field_sep Object memberData concode_field_sep int hashCode concode_elem_sep boolean equals concode_elem_sep String toString
target: boolean function ( V arg0 ) { return equals ( Preconditions . checkNotNull ( arg0 ) ) ; }