void function ( boolean arg0 ) { if ( ExoPlayerLibraryInfo . ASSERTIONS_ENABLED && ! arg0 ) { throw new IllegalStateException ( ) ; } }
ensures the truth of an expression involving the state of the calling instance . concode_field_sep PlaceHolder placeHolder concode_field_sep String checkNotEmpty concode_elem_sep String checkNotEmpty concode_elem_sep T checkNotNull concode_elem_sep T checkNotNull concode_elem_sep void checkMainThread concode_elem_sep void checkArgument concode_elem_sep void checkArgument