Constant TIMESTAMP_NANO_TYPE_VARIATION_REF     
pub const TIMESTAMP_NANO_TYPE_VARIATION_REF: u32 = 3; // 3u32👎Deprecated since 42.0.0: Use 
PrecisionTimestamp(Tz) type insteadpub const TIMESTAMP_NANO_TYPE_VARIATION_REF: u32 = 3; // 3u32PrecisionTimestamp(Tz) type instead