azure-cli: Metadata comments in param file throw an error

az feedback auto-generates most of the information requested below, as of CLI version 2.0.80

Describe the bug using in param file metadata for validate ARM template will get an error “message”: "The request content was invalid and could not be deserialized: 'Could not find member ‘metadata’ on object of type ‘DeploymentParameterDefinition’. Path ‘properties.parameters.storageAccountType.metadata’

To Reproduce JSON - ARM Template JSON - ARM Param File should contains metadata { “$schema”: “https://schema.management.azure.com/schemas/2015-01-01/deploymentParameters.json#”, “contentVersion”: “1.0.0.0”, “parameters”: {
“storageAccountType”: { “value”: “Standard_LRS”, “metadata”: { “description”: “AAA” } } } } run cli command az group deployment validate -g rg-test -j --template-file storage.json --parameters @storage.param.json

throw error: { “error”: { “additionalInfo”: null, “code”: “InvalidRequestContent”, “details”: null, “message”: “The request content was invalid and could not be deserialized: ‘Could not find member ‘metadata’ on object of type ‘DeploymentParameterDefinition’. Path ‘properties.parameters.storageAccountType.metadata’, line 1, position 90.’.”, “target”: null }, “properties”: null }

Expected behavior No error

Environment summary azure-cli 2.0.80 command-modules-nspkg 2.0.3 core 2.0.80 nspkg 3.0.4 telemetry 1.0.4 Python (Linux) 3.6.5 (default, Jan 13 2020, 05:04:39) [GCC 7.4.0] But I try also with Windows OS same issue