def initialize
@include_json_root = true
@include_child_root = true
@include_msgpack_root = true
@include_plist_root = true
@include_xml_root = false
@include_bson_root = true
@enable_json_callbacks = false
@bson_check_keys = false
@bson_move_id = false
@json_engine = nil
@msgpack_engine = nil
@bson_engine = nil
@plist_engine = nil
@xml_options = {}
@cache_sources = false
@cache_all_output = false
@escape_all_output = false
@view_paths = []
@cache_engine = Rabl::CacheEngine.new
@perform_caching = false
@use_read_multi = true
@replace_nil_values_with_empty_strings = false
@replace_empty_string_values_with_nil_values = false
@exclude_nil_values = false
@exclude_empty_values_in_collections = false
@camelize_keys = false
end