1/// A custom type is an application defined type with special semantics. 2pub const CUSTOM_VALUE_KIND_START: u8 = 0x80; 3 4pub const OPTION_VARIANT_NONE: u8 = 0; 5pub const OPTION_VARIANT_SOME: u8 = 1; 6pub const RESULT_VARIANT_OK: u8 = 0; 7pub const RESULT_VARIANT_ERR: u8 = 1;