pub fn block_id_prefix(&self) -> String {
        self.block_id
            .as_ref()
            .map(block::Id::prefix)
            .unwrap_or_else(|| NIL_PLACEHOLDER.to_owned())
    }
/// Get short prefix of the block ID for debugging purposes (ala git)
Get short prefix of the block ID for debugging purposes (ala git)
Get short prefix of the block ID for debugging purposes ( ala git )
pub fn block_id_prefix(&self) -> String {
        self.block_id
            .as_ref()
            .map(block::Id::prefix)
            .unwrap_or_else(|| NIL_PLACEHOLDER.to_owned())
    }
pub fn block_id_prefix ( & self ) -> String { self . block_id . as_ref ( ) . map ( block :: Id :: prefix ) . unwrap_or_else ( | | NIL_PLACEHOLDER . to_owned ( ) ) }
Get short prefix of the block ID for debugging purposes (ala git)
Get short prefix of the block ID for debugging purposes ( ala git )
&self