return [list]
  }

  #
  # NOTE: This procedure returns the base URI for the package repository
  #       server.  There are no arguments.
  #
  # <internal>
  proc getLookupBaseUri {} {
    global env

    set varName [appendArgs [getLookupVarNamePrefix] base_uri]

    if {[info exists $varName]} then {
      return [set $varName]

  #       name of the package being looked up, it cannot be an empty
  #       string.  The version argument is the specific version being
  #       looked up -OR- an empty string for any available version.  There
  #       are no HTTP requests issued by this procedure; it simply returns
  #       the URI to use.
  #
  proc getLookupUri { apiKeys package version } {
    #
    # NOTE: Fetch the base URI for the package repository server.  If it
    #       is not available for some reason, just return an empty string
    #       to the caller (i.e. as we cannot do anything productive).
    #
    set baseUri [getLookupBaseUri]

    if {[string length $baseUri] == 0} then {
      return ""
    }

    #

    }

    #
    # NOTE: Load a native Tcl library.  It absolutely must be signed with a
    #       valid Authenticode signature.
    #
    tcl load -findflags +TrustedOnly -loadflags +SetDllDirectory
    # tcl load -findflags =Typical -loadflags +SetDllDirectory

    #
    # NOTE: Verify that the native Tcl library appears to have beed loaded
    #       into this interpreter.
    #
    tclMustBeReady
  }