#fixed code
                                @Test
    public void testValidMapStatementAndTrimMultipleWhitSpaces() throws Exception {
        ForLoopStatement statement = transformer.transform("   k,    v     in  collection  ");
        MapForLoopStatement mapForLoopStatement  = validateMapForLoopStatement(statement);
        Assert.assertEquals("k", mapForLoopStatement.getKeyName());
        Assert.assertEquals("v", mapForLoopStatement.getValueName());
        Assert.assertEquals("collection", statement.getCollectionExpression());
    }
#vulnerable code 
                                @Test
    public void testValidMapStatementAndTrimMultipleWhitSpaces() throws Exception {
        ForLoopStatement statement = transformer.transform("   k,    v     in  collection  ");
        Assert.assertEquals(ForLoopStatement.Type.MAP, statement.getType());
        Assert.assertEquals("k v", statement.getVarName());
        Assert.assertEquals("collection", statement.getCollectionExpression());
    } 
                            #location 4 
                            #vulnerability type NULL_DEREFERENCE