public boolean METHOD_1 ( java.util.Collection < ? > VAR_1 ) { throw new TYPE_1 ( ( ( getClass ( ) . METHOD_2 ( ) ) + STRING_1 ) ) ; } 

public boolean METHOD_1 ( java.util.Collection < ? > VAR_1 ) { if ( VAR_1 != null ) { for ( java.lang.Object item : VAR_1 ) { remove ( item ) ; } } return true ; } 
