How to get vsphere networks name with vCloud API?

I am using below vcloud API to get list of vsphere networks from vcenter, I get the list of all networks with their MoRef but the network name attribute is blank, however  I can see  names of the vsphere networks on vCloud UI.

API:

https://vcloud.example.com/api/admin/extension/vimServer/id/networks

Response:

<vmext:VimObjectRefList type="application/vnd.vmware.admin.vimServerNetworks+xml" xsi:schemaLocation="http://www.vmware.com/vcloud/extension/v1.5http://example.com/api/v1.5/schema/vmwextensions.xsdhttp://www.vmware.com/vcloud/v1.5http://example.com/api/v1.5/schema/master.xsd">

<vcloud:Link rel="up" href= "https://example.com/api/admin/extension/vimServer/fd4fe2c2-06eb-488f-a1c5-00b135d07d30" type="application/vnd.vmware.admin.vmwvirtualcenter+xml"/>

<vmext:VimObjectRefs>

      <vmext:VimObjectRef>

        <vmext:VimServerRef href= "https://example.com/api/admin/extension/vimServer/fd4fe2c2-06eb-488f-a1c5-00b135d07d30" name="" type="application/vnd.vmware.admin.vmwvirtualcenter+xml"/>

        <vmext:MoRef>dvportgroup-681</vmext:MoRef>

        <vmext:VimObjectType>DV_PORTGROUP</vmext:VimObjectType>

      </vmext:VimObjectRef>

    <vmext:VimObjectRef>

      <vmext:VimServerRef href= "https://example.com/api/admin/extension/vimServer/fd4fe2c2-06eb-488f-a1c5-00b135d07d30" name="" type="application/vnd.vmware.admin.vmwvirtualcenter+xml"/>

      <vmext:MoRef>dvportgroup-48</vmext:MoRef>

      <vmext:VimObjectType>DV_PORTGROUP</vmext:VimObjectType>

    </vmext:VimObjectRef>

    <vmext:VimObjectRef>

      <vmext:VimServerRef href= "https://example.com/api/admin/extension/vimServer/fd4fe2c2-06eb-488f-a1c5-00b135d07d30" name="" type="application/vnd.vmware.admin.vmwvirtualcenter+xml"/>

      <vmext:MoRef>network-121</vmext:MoRef>

      <vmext:VimObjectType>NETWORK</vmext:VimObjectType>

    </vmext:VimObjectRef>

  </vmext:VimObjectRefs>

</vmext:VimObjectRefList>