src/EntityRepositoryTrait.php
public function createQueryBuilder($alias = null, $indexBy = null)
    {
        return $this->createNewQueryBuilderInstance()->selectFromRepositoryEntity($alias, $indexBy);
    }
public function createQueryBuilder($alias = null, $indexBy = null)
    {
        return $this->createNewQueryBuilderInstance()->selectFromRepositoryEntity($alias, $indexBy);
    }
Gets an ExpressionBuilder used for object-oriented construction of query expressions.

@param string $alias
@param string $indexBy The index for the from.

@return EntityQueryBuilder
@throws \ReflectionException