You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: error.rs
    path of file: ./repos/surrealdb/core/src/key
    
    the code of the file until where you have to start completion: use std::fmt::{Display, Formatter};

#[derive(Debug, Copy, Clone)]
pub enum KeyCategory {
	/// This category is reserved for cases when we do not know the category
	/// It should be caught and re-po
    
	fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
		let name = match self {
			KeyCategory::Unknown => "Unknown",
			KeyCategory::Root => "Root",
			KeyCategory::Heartbeat => "Heartbeat",
			KeyCategory::Node => "Node",
			KeyCategory::NamespaceIdentifier => "NamespaceIdentifier",
			KeyCategory::Namespace => "Namespace",
			KeyCategory::User => "User",
			KeyCategory::NodeRoot => "NodeRoot",
			KeyCategory::NodeLiveQuery => "NodeLiveQuery",
			KeyCategory::NamespaceRoot => "NamespaceRoot",
			KeyCategory::DatabaseAlias => "DatabaseAlias",
			KeyCategory::DatabaseIdentifier => "DatabaseIdentifier",
			KeyCategory::DatabaseLogAlias => "DatabaseLogAlias",
			KeyCategory::NamespaceToken => "NamespaceToken",
			KeyCategory::NamespaceUser => "NamespaceUser",
			KeyCategory::DatabaseRoot => "DatabaseRoot",
			KeyCategory::DatabaseAnalyzer => "DatabaseAnalyzer",
			KeyCategory::DatabaseFunction => "DatabaseFunction",
			KeyCategory::DatabaseLog => "DatabaseLog",
			KeyCategory::DatabaseModel => "DatabaseModel",
			KeyCategory::DatabaseParameter => "DatabaseParameter",
			KeyCategory::DatabaseScope => "DatabaseScope",
			KeyCategory::DatabaseTable => "DatabaseTable",
			KeyCategory::DatabaseTableIdentifier => "DatabaseTableIdentifier",
			KeyCategory::DatabaseToken => "DatabaseToken",
			KeyCategory::DatabaseTimestamp => "DatabaseTimestamp",
			KeyCategory::DatabaseUser => "DatabaseUser",
			KeyCategory::DatabaseVersionstamp => "DatabaseVersionstamp",
			KeyCategory::ScopeRoot => "ScopeRoot",
			KeyCategory::ScopeToken => "ScopeToken",
			KeyCategory::TableRoot => "TableRoot",
			KeyCategory::TableEvent => "TableEvent",
			KeyCategory::TableField => "TableField",
			KeyCategory::TableView => "TableView",
			KeyCategory::IndexDefinition => "IndexDefinition",
			KeyCategory::TableLiveQuery => "TableLiveQuery",
			KeyCategory::IndexRoot => "IndexRoot",
			KeyCategory::IndexTermDocList => "IndexTermDocList",
			KeyCategory::IndexBTreeNode => "IndexBTreeNode",
			KeyCategory::IndexTermDocFrequency => "IndexTermDocFrequency",
			KeyCategory::IndexDocKeys => "IndexDocKeys",
			KeyCategory::IndexTermList => "IndexTermList",
			KeyCategory::IndexBTreeNodeDocLengths => "IndexBTreeNodeDocLengths",
			KeyCategory::IndexOffset => "IndexOffset",
			KeyCategory::IndexBTreeNodePostings => "IndexBTreeNodePostings",
			KeyCategory::IndexFullTextState => "IndexFullTextState",
			KeyCategory::IndexBTreeNodeTerms => "IndexBTreeNodeTerms",
			KeyCategory::IndexTerms => "IndexTerms",
			KeyCategory::Index => "Index",
			KeyCategory::ChangeFeed => "ChangeFeed",
			KeyCategory::Thing => "Thing",
			KeyCategory::Graph => "Graph",
		};
		write!(f, "{}", name)
	}