class Decidim::Meetings::JoinMeeting

registration_form - A form object with params; can be a questionnaire.
user - The user joining the meeting.
meeting - The current instance of the meeting to be joined.

Initializes a JoinMeeting Command.

def initialize(meeting, user, registration_form)
  @meeting = meeting
  @user = user
  @user_group = Decidim::UserGroup.find_by(id: registration_form.user_group_id)
  @registration_form = registration_form
end