code: function checkPropertyAccessibilityModifier(classProperty) {
              if (
                  !classProperty.accessibility &&
                  util.isTypescript(context.getFilename())
              ) {
                  context.report({
                      node: classProperty,
                      message:
                          "Missing accessibility modifier on class property {{name}}.",
                      data: {
                          name: classProperty.key.name,
                      },
                  });
              }
          }
docs: Checks if property has an accessibility modifier.
  @param {ASTNode} classProperty The node representing a ClassProperty.
  @returns {void}
  @private