Example didn't work

[Kal-Aster]

Hello, I just installed this library, but I encountered a problem with the examples in the documentation.

I tested the example of the LEFT JOIN, but this didn't work:

<?php
use NilPortugues\Sql\QueryBuilder\Builder\GenericBuilder;

$builder = new GenericBuilder(); 

$query = $builder->select()
    ->setTable('user')
    ->setColumns([
            'userId'   => 'user_id',
            'username' => 'name',
            'email'    => 'email',
            'created_at'
    ])
    ->orderBy('user_id', OrderBy::DESC)
    ->leftJoin(
        'news', //join table
        'user_id', //origin table field used to join
        'author_id', //join column
         ['newsTitle' => 'title', 'body', 'created_at', 'updated_at']
     )
    ->on()
    ->equals('author_id', 1); //enforcing a condition on the join column

$query
    ->where()
    ->greaterThan('user_id', 5)
    ->notLike('username', 'John')
	->end();

$query
    ->orderBy('created_at', OrderBy::DESC);

echo $builder->writeFormatted($query);

With some tweaks I managed to make it work, and it appears like so:

<?php
use NilPortugues\Sql\QueryBuilder\Builder\MySqlBuilder;
use NilPortugues\Sql\QueryBuilder\Syntax\OrderBy;
use NilPortugues\Sql\QueryBuilder\Syntax\Where;

$builder = new MySqlBuilder(); 

$query = $builder->select();
$query->setTable('user')
    ->setColumns([
            'userId'   => 'user_id',
            'username' => 'name',
            'email'    => 'email',
            'created_at'
    ])
	->orderBy('user_id', OrderBy::DESC);

$query
	->leftJoin(
        'news', //join table
        'user_id', //origin table field used to join
        'author_id', //join column
         ['newsTitle' => 'title', 'body', 'created_at', 'updated_at']
	)
	->on()
	->equals('author_id', 1) //enforcing a condition on the join column
	->end();

$query
	->where()
    ->greaterThan('user_id', 5)
    ->notLike('username', 'John')
	->end()
	->orderBy('created_at', OrderBy::DESC);

echo $builder->writeFormatted($query);

Is it different because I used MySqlBuilder or is there something wrong I can't understand?

[hlpeter]

I have same problem with example.
Fatal error: Uncaught Error: Call to undefined method NilPortugues\Sql\QueryBuilder\Syntax\Where::where()

edit: I fixed my problem

    $query->leftJoin(
        'news', //join table
        'user_id', //origin table field used to join
        'author_id', //join column
         ['newsTitle' => 'title', 'body', 'created_at', 'updated_at']
     )
    ->on()
    ->equals('author_id', 1)->end(); //enforcing a condition on the join column

    $query
    ->where()
    ->greaterThan('user_id', 5)
    ->notLike('username', 'John')
    ->end();

line: ->equals('author_id', 1)->end();