expression {
  struct_expr {
    message_name: "envoy.config.core.v3.BuildVersion"
    entries {
      field_key: "metadata"
      value {
        struct_expr {
          entries {
            map_key {
              const_expr {
                string_value: "validate.BytesRules"
              }
            }
            value {
              list_expr {
                elements {
                  select_expr {
                    operand {
                      ident_expr {
                        name: "request"
                      }
                    }
                    field: "url_path"
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}
