protected function prepareForValidation(): void 	{ 		$this->merge([ 			'number_of_employees' => isset($this->number_of_employees) ? (int) $this->number_of_employees : null, 			'number_of_male_employees' => isset($this->number_of_male_employees) ? (int) $this->number_of_male_employees : null, 			'number_of_female_employees' => isset($this->number_of_female_employees) ? (int) $this->number_of_female_employees : null, 			'number_of_other_employees' => isset($this->number_of_other_employees) ? (int) $this->number_of_other_employees : null, 			'number_of_employees_with_special_qualification' => isset($this->number_of_employees_with_special_qualification) ? (int) $this->number_of_employees_with_special_qualification : null, 			'number_of_employees_with_higher_qualification' => isset($this->number_of_employees_with_higher_qualification) ? (int) $this->number_of_employees_with_higher_qualification : null, 			'number_of_employees_with_middle_qualification' => isset($this->number_of_employees_with_middle_qualification) ? (int) $this->number_of_employees_with_middle_qualification : null, 			'number_of_employees_with_lower_qualification' => isset($this->number_of_employees_with_lower_qualification) ? (int) $this->number_of_employees_with_lower_qualification : null, 			'online_applicants_count' => isset($this->online_applicants_count) ? (int) $this->online_applicants_count : null, 			'offline_applicants_count' => isset($this->offline_applicants_count) ? (int) $this->offline_applicants_count : null, 		]); 	}