public TYPE_1 METHOD_1 ( ) { synchronized ( VAR_1 ) { if ( VAR_1 . isEmpty ( ) ) { return null ; } return VAR_1 . METHOD_2 ( ) ; } } 

public TYPE_1 METHOD_1 ( ) { synchronized ( VAR_1 ) { if ( VAR_1 . isEmpty ( ) ) { return null ; } return VAR_1 . remove ( ) ; } } 
