use thiserror::Error;pub type Result<T> = std::result::Result<T, MetricsError>;#[derive(Debug, Error)]pub enum MetricsError {    // Metrics.    #[error("metric name cannot be empty")]    EmptyMetricName,    #[error("metric name contains invalid characters: {name}")]    InvalidMetricName { name: String },    #[error("{label} cannot be empty")]    EmptyTagComponent { label: String },    #[error("{label} contains invalid characters: {value}")]    InvalidTagComponent { label: String, value: String },    #[error("metrics exporter is disabled")]    ExporterDisabled,    #[error("counter increment must be non-negative for {name}: {inc}")]    NegativeCounterIncrement { name: String, inc: i64 },    #[error("failed to build OTLP metrics exporter")]    ExporterBuild {        #[source]        source: opentelemetry_otlp::ExporterBuildError,    },    #[error("invalid OTLP metrics configuration: {message}")]    InvalidConfig { message: String },    #[error("failed to flush or shutdown metrics provider")]    ProviderShutdown {        #[source]        source: opentelemetry_sdk::error::OTelSdkError,    },    #[error("runtime metrics snapshot reader is not enabled")]    RuntimeSnapshotUnavailable,    #[error("failed to collect runtime metrics snapshot from metrics reader")]    RuntimeSnapshotCollect {        #[source]        source: opentelemetry_sdk::error::OTelSdkError,    },}