The other as_* methods all come after the corresponding is_* method.

    warning: redundant explicit link target
       --> src/lib.rs:59:20
        |
    59  | //! [`from_slice`][from_slice] for parsing from a byte slice &[u8] and
        |      ------------  ^^^^^^^^^^ explicit target is redundant
        |      |
        |      because label contains path that resolves to same destination
        |
    note: referenced explicit link target defined here
       --> src/lib.rs:295:19
        |
    295 | //! [from_slice]: crate::de::from_slice
        |                   ^^^^^^^^^^^^^^^^^^^^^
        = note: when a link's destination is not specified,
                the label is used to resolve intra-doc links
        = note: `#[warn(rustdoc::redundant_explicit_links)]` on by default
    help: remove explicit link target
        |
    59  | //! [`from_slice`] for parsing from a byte slice &[u8] and
        |     ~~~~~~~~~~~~~~

    warning: redundant explicit link target
       --> src/lib.rs:60:21
        |
    60  | //! [`from_reader`][from_reader] for parsing from any `io::Read` like a File or
        |      -------------  ^^^^^^^^^^^ explicit target is redundant
        |      |
        |      because label contains path that resolves to same destination
        |
    note: referenced explicit link target defined here
       --> src/lib.rs:296:20
        |
    296 | //! [from_reader]: crate::de::from_reader
        |                    ^^^^^^^^^^^^^^^^^^^^^^
        = note: when a link's destination is not specified,
                the label is used to resolve intra-doc links
    help: remove explicit link target
        |
    60  | //! [`from_reader`] for parsing from any `io::Read` like a File or
        |     ~~~~~~~~~~~~~~~

adds `as_str` to `Number` if `arbitrary_precision` is enabled