in src/PSDocs.Azure/Pipeline/PathBuilder.cs [100:112]
private string GetSearchParameters(string path, out string searchPattern, out SearchOption searchOption)
{
searchOption = SearchOption.AllDirectories;
var pathLiteral = SplitSearchPath(TrimPath(path, out var relativeAnchor), out searchPattern);
if (string.IsNullOrEmpty(searchPattern))
searchPattern = _DefaultSearchPattern;
// If a path separator is within the pattern use a resursive search
if (relativeAnchor || !string.IsNullOrEmpty(pathLiteral))
searchOption = SearchOption.TopDirectoryOnly;
return GetRootedPath(pathLiteral);
}