class Hashie::Extensions::Parsers::YamlErbParser

def yaml_safe_load(template, permitted_classes, permitted_symbols, aliases)

Ruby 2.6+ 
def yaml_safe_load(template, permitted_classes, permitted_symbols, aliases)
  YAML.safe_load(
    template.result,
    permitted_classes: permitted_classes,
    permitted_symbols: permitted_symbols,
    aliases: aliases
  )
end