'; } public function header() { return '
$company_logo
$company_details
$company_address
'; } public function body() { return '

$entity_label

$entity_labels
$entity_details
$client_details
'; } public function task() { } public function product() { return ' $product_table_header $product_table_body
$entity.public_notes
$total_tax_labels $line_tax_labels
$total_tax_values $line_tax_values

$terms_label

$terms
$balance_due_label
$balance_due
'; } public function footer() { return '
'; } }