ensures that reference is non-null , throwing a verifyexception with a custommessage otherwise . concode_field_sep PlaceHolder placeHolder concode_field_sep void verify concode_elem_sep void verify
T function ( @ Nullable T arg0 , @ Nullable String arg1 , @ Nullable Object ... arg2 ) { verify ( arg0 != null , arg1 , arg2 ) ; return arg0 ; }