$html_name = str_replace('_', '-', $field_name);
$this->createFileField($field_name, 'node', 'article', ['cardinality' => FieldStorageConfig::CARDINALITY_UNLIMITED]);
$file = $this->getTestFile('text');
$html_name = str_replace('_', '-', $field_name);
$this->createFileField($field_name, 'node', 'article', ['cardinality' => FieldStorageConfig::CARDINALITY_UNLIMITED]);
$file = $this->getTestFile('text');