public TYPE_1 METHOD_1 ( ) { if ( ( size ) == 0 ) return null ; else { TYPE_1 data = VAR_1 . data ; VAR_1 = VAR_2 ; return data ; } } 

public TYPE_1 METHOD_1 ( ) { if ( ( size ) != 0 ) { TYPE_1 data = VAR_1 . data ; VAR_1 = VAR_2 ; ( size ) -- ; return data ; } return null ; } 
