use crate::parser::SectionHeaderName;use std::fmt::Display; /// All possible error types that may occur from interacting with/// [`GitConfig`](super::GitConfig).#[derive(PartialEq, Eq, Hash, Clone, PartialOrd, Ord, Debug)]pub enum GitConfigError<'a> {    /// The requested section does not exist.    SectionDoesNotExist(SectionHeaderName<'a>),    /// The requested subsection does not exist.    SubSectionDoesNotExist(Option<&'a str>),    /// The key does not exist in the requested section.    KeyDoesNotExist,    /// The conversion into the provided type for methods such as    /// [`GitConfig::value`](super::GitConfig::value) failed.    FailedConversion,} impl Display for GitConfigError<'_> {    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {        match self {            Self::SectionDoesNotExist(s) => write!(f, "Section '{}' does not exist.", s),            Self::SubSectionDoesNotExist(s) => match s {                Some(s) => write!(f, "Subsection '{}' does not exist.", s),                None => write!(f, "Top level section does not exist."),            },            Self::KeyDoesNotExist => write!(f, "The name for a value provided does not exist."),            Self::FailedConversion => write!(f, "Failed to convert to specified type."),        }    }} impl std::error::Error for GitConfigError<'_> {} #[derive(PartialEq, Eq, Hash, Clone, PartialOrd, Ord, Debug)]pub enum GitConfigFromEnvError {    ParseError(String),    InvalidKeyId(usize),    InvalidKeyValue(String),    InvalidValueId(usize),}