Cannot create or update property/namedvalues for api management

[annaji-msft]

• Package Name: azure-arm-apimanagement
• Package Version: ^5.1.0
• Operating system: Window
• [x ] nodejs
  • version: 6.8.0

Describe the bug
trying to create property/namedvalue throws,

Error "mapper.constraints[constraintType].split is not a function" occurred in serializing the payload - {
"displayName": "foo",
"value": "bar",
"secret": true
}.

To Reproduce
Steps to reproduce the behavior:

1. create a property/namedvalue using with payload
   {
   "displayName": "foo",
   "value": "bar",
   "secret": true
   }.

Expected behavior
Same as portal behavior. Should create a property/namedvalue

Screenshots
If applicable, add screenshots to help explain your problem.

Additional context
this is what seems to cause it
https://github.com/Azure/azure-sdk-for-node/blob/e1887b81ee4f1b0d540d6b63c84c542829036edd/lib/services/apimanagement/lib/models/propertyContract.js#L104

at line
https://github.com/Azure/azure-sdk-for-node/blob/master/runtime/ms-rest/lib/serialization.js#L160

[annaji-msft]

looks very similar to #3718

[solankisamir]

@amarzavery this looks like bug in sdk

[amarzavery]

@anganti - What is the name of the operation that you are trying to use?

[annaji-msft]

@anganti - What is the name of the operation that you are trying to use?

client.property.createOrUpdate

https://github.com/microsoft/vscode-apimanagement/blob/ec192c24cf6d40129bee6ca9e121a47b24eaeae8/src/explorer/NamedValuesTreeItem.ts#L61

[kpajdzik]

Fixed in 2.5.1 - https://www.npmjs.com/package/ms-rest/v/2.5.1