def call
      return broadcast(:invalid) unless user&.invited_to_sign_up?

      user.invite!(user.invited_by, invitation_instructions: instructions)

      broadcast(:ok)
    end
def call
      return broadcast(:invalid) unless user&.invited_to_sign_up?

      user.invite!(user.invited_by, invitation_instructions: instructions)

      broadcast(:ok)
    end
Public: Initializes the command.

 form - A form object with the params.