/// <summary>
/// Searches for extension methods exactly called 'Select'. Returns
/// <see cref="SymbolReference"/>s to the <see cref="INamespaceSymbol"/>s that contain
/// the static classes that those extension methods are contained in.
/// </summary>
private async Task <ImmutableArray <SymbolReference> > GetReferencesForQueryPatternsAsync(SearchScope searchScope)
{
searchScope.CancellationToken.ThrowIfCancellationRequested();
if (_owner.CanAddImportForQuery(_diagnosticId, _node))
{
var type = _owner.GetQueryClauseInfo(_semanticModel, _node, searchScope.CancellationToken);
if (type != null)
{
// find extension methods named "Select"
return(await GetReferencesForExtensionMethodAsync(
searchScope, nameof(Enumerable.Select), type).ConfigureAwait(false));
}
}
return(ImmutableArray <SymbolReference> .Empty);
}
