class Lutaml::Model::Schema::XmlCompiler::SimpleContent

def <<(instance)
  return if instance.nil?
  @instances << instance
end

def initialize
  @instances = []
  @base_class = nil
end

def required_files
  instances.map(&:required_files).flatten.compact.uniq
end

def to_attributes(indent = nil)
  instances.filter_map { |instance| instance.to_attributes(indent) }.join("\n")
end

def to_xml_mapping(indent = nil)
  instances.filter_map { |instance| instance.to_xml_mapping(indent) }.join("\n")
end