Method setTrailer

lib/internal/http2/compat.js:579–584

(name, value)

  }

  setTrailer(name, value) {
    validateString(name, 'name');
    name = name.trim().toLowerCase();
    assertValidHeader(name, value);
    this[kTrailers][name] = value;
  }

  addTrailers(headers) {
    const keys = ObjectKeys(headers);