[OperationContractAttribute] VersionInfo[] getInstalledVersions( string projectName, string packageName, string repositoryUrl, string currentVersion, string currentSite, string currentVirtualPath )
<OperationContractAttribute> _ Function getInstalledVersions ( _ projectName As String, _ packageName As String, _ repositoryUrl As String, _ currentVersion As String, _ currentSite As String, _ currentVirtualPath As String _ ) As VersionInfo()