fn validate_event_aura_references(
effects: &[EventEffectDef],
auras: &IndexSet<&str>,
location: &ManifestDiagnosticLocation,
diagnostics: &mut Vec<ManifestDiagnostic>,
)fn validate_event_aura_references(
effects: &[EventEffectDef],
auras: &IndexSet<&str>,
location: &ManifestDiagnosticLocation,
diagnostics: &mut Vec<ManifestDiagnostic>,
)