code: function insertProperty (fixer, node, propertyText) {
        if (node.properties.length === 0) {
          return fixer.replaceText(node, `{\n${propertyText}\n}`);
        }
        return fixer.insertTextAfter(
          sourceCode.getLastToken(node.properties[node.properties.length - 1]),
          `,\n${propertyText}`
        );
      }
docs: Insert a given property into a given object literal.
  @param {SourceCodeFixer} fixer The fixer.
  @param {Node} node The ObjectExpression node to insert a property.
  @param {string} propertyText The property code to insert.
  @returns {void}