class ActiveRecord::FixtureSet::TableRow::HasManyThroughProxy

def join_table
  @association.through_reflection.table_name
end

def lhs_key
  @association.through_reflection.foreign_key
end

def rhs_key
  @association.foreign_key
end

def timestamp_column_names
  @association.through_reflection.klass.all_timestamp_attributes_in_model
end