Can i have multiple call inside single module

I want to have multiple classes inside grape entity file, this is the folder structure app/api/proj/api/v2/entities/committee.rb

module PROJ::API::V2::Entities
class Committee < Grape::Entity
expose :id

expose :name, :full_name, :email, :tag, :parent_id

expose :country do |entity, option|
entity.parent.name if entity.parent.present?
end

include Urls

private
def self.namespace_path
"committees"
end
end

class CommitteeWithSubcommittees < CommitteeBase
# include ProfilePhoto
expose :suboffices, with: 'PROJ::API::V2::Entities::CommitteeBase'
end
and inside the grape api

present @committees, with: PROJ::API::V2::Entities::Committee
is working. but if i present with

present @committees, with: PROJ::API::V2::Entities::CommitteeList
it is not working. But it works when i move it to a new file named committee_list.rb inside entities

Start with app/api/proj/api/v2/entities/committee.rb and compare the defined Committee and CommitteeWithSubcommittees classes with the Grape present calls. Check the corresponding standalone committee_list.rb file and determine whether the intended entity name is CommitteeWithSubcommittees or CommitteeList. Done means the intended entity can be referenced from the single file without breaking presentation.