system/Pager/Pager.php
public function getPerPage(string $group = 'default'): int
	{
		$this->ensureGroup($group);

		return (int) $this->groups[$group]['perPage'];
	}
public function getPerPage(string $group = 'default'): int
	{
		$this->ensureGroup($group);

		return (int) $this->groups[$group]['perPage'];
	}
Returns the number of results per page that should be shown.

@param string $group

@return integer