$ policytools template-resolver ./skipobject.yml 
E0403 11:02:16.014654 3152203 templates.go:653] error parsing template string - complianceType: musthave
  objectDefinition:
    apiVersion: v1
    data:
      date: {{ now }}
      skip: {{ skipObject }}
    kind: ConfigMap
    metadata:
      name: test
      namespace: test
,
 template str - complianceType: musthave
  objectDefinition:
    apiVersion: v1
    data:
      date: {{ now }}
      skip: {{ skipObject }}
    kind: ConfigMap
    metadata:
      name: test
      namespace: test
,
 error: template: tmpl:6: function "skipObject" not defined
error processing templates: failed to process the templates: failed to parse the template JSON string - complianceType: musthave
  objectDefinition:
    apiVersion: v1
    data:
      date: {{ now }}
      skip: {{ skipObject }}
    kind: ConfigMap
    metadata:
      name: test
      namespace: test
: template: tmpl:6: function "skipObject" not defined