ensures that a string passed as an argument to the calling method is not null or 0-length . concode_field_sep PlaceHolder placeHolder concode_field_sep T checkNotNull concode_elem_sep T checkNotNull concode_elem_sep void checkState concode_elem_sep void checkState concode_elem_sep void checkMainThread concode_elem_sep void checkArgument concode_elem_sep void checkArgument
String function ( String arg0 ) { if ( ExoPlayerLibraryInfo . ASSERTIONS_ENABLED && TextUtils . isEmpty ( arg0 ) ) { throw new IllegalArgumentException ( ) ; } return arg0 ; }