FetchTemplateVariableYaml extract variables from go template yaml and package them into yaml supports most standard go-template grammar, but can't deal with complex situation like range in range / local vars using $ NOTE the return value should not be fully trusted.

GetTemplateVariableYaml returns variable yaml of yamlTemplate or templateService.

GetYamlVariables extract variables from go template yaml to Zadig-defined vars use regex to search {{.rar}} and turn to {key: var} NOTE this function DOES NOT support full go-template grammar, like {{- range }} / {{- eq }} / {{- if }} / nested data technically this function should be deprecated.

SafeMergeVariableYaml merge yamls support go template grammar, you can put {{.xxx}} as value in variable yaml.