"[u8; 32]" if !is_ref => Some("crate::c_types::ThirtyTwoBytes"),
"[u8; 20]" if !is_ref => Some("crate::c_types::TwentyBytes"),
"[u8; 16]" if !is_ref => Some("crate::c_types::SixteenBytes"),
"[u8; 32]" if !is_ref => Some("crate::c_types::ThirtyTwoBytes"),
"[u8; 20]" if !is_ref => Some("crate::c_types::TwentyBytes"),
"[u8; 16]" if !is_ref => Some("crate::c_types::SixteenBytes"),