How to use

RequestBuilderBase

in

org.asynchttpclient

/**
 * @param name  header name
 * @param value header value to set
 * @return {@code this}
 * @see #setHeader(CharSequence, Object)
 */
public T setHeader(CharSequence name, String value) {
 return setHeader(name, (Object) value);
}

public T addCookie(Cookie cookie) {
 lazyInitCookies();
 this.cookies.add(cookie);
 return asDerivedType();
}

public T setBody(List<byte[]> data) {
 resetBody();
 this.compositeByteData = data;
 return asDerivedType();
}

public T setFormParams(List<Param> params) {
 resetNonMultipartData();
 resetMultipartData();
 this.formParams = params;
 return asDerivedType();
}

private void resetBody() {
 resetFormParams();
 resetNonMultipartData();
 resetMultipartData();
}

public T addBodyPart(Part bodyPart) {
 resetFormParams();
 resetNonMultipartData();
 if (this.bodyParts == null)
  this.bodyParts = new ArrayList<>();
 this.bodyParts.add(bodyPart);
 return asDerivedType();
}

public T setFormParams(List<Param> params) {
  resetNonMultipartData();
  resetMultipartData();
  request.formParams = params;
  return derived.cast(this);
}

  public Request build() {
    executeSignatureCalculator();
    computeFinalUri();
    computeRequestCharset();
    computeRequestLength();
    return request;
  }
}

public Request build() {
 updateCharset();
 RequestBuilderBase<?> rb = executeSignatureCalculator();
 Uri finalUri = rb.computeUri();

public T setBody(ByteBuffer data) {
  resetBody();
  request.byteBufferData = data;
  return derived.cast(this);
}

public T addBodyPart(Part part) {
  resetFormParams();
  resetNonMultipartData();
  if (request.parts == null)
    request.parts = new ArrayList<>();
  request.parts.add(part);
  return derived.cast(this);
}

public T setBody(Publisher<ByteBuf> publisher) {
 return setBody(publisher, -1L);
}

public T setQueryParams(Map<String, List<String>> map) {
  return setQueryParams(map2ParamList(map));
}

public T setFormParams(Map<String, List<String>> map) {
  return setFormParams(map2ParamList(map));
}
public T setFormParams(List<Param> params) {

public T addCookie(Cookie cookie) {
  lazyInitCookies();
  request.cookies.add(cookie);
  return derived.cast(this);
}

public T setQueryParams(Map<String, List<String>> map) {
 return setQueryParams(Param.map2ParamList(map));
}

public T setFormParams(Map<String, List<String>> map) {
 return setFormParams(Param.map2ParamList(map));
}

private void resetBody() {
  resetFormParams();
  resetNonMultipartData();
  resetMultipartData();
}

public T addFormParam(String name, String value) {
 resetNonMultipartData();
 resetMultipartData();
 if (this.formParams == null)
  this.formParams = new ArrayList<>(1);
 this.formParams.add(new Param(name, value));
 return asDerivedType();
}

public T addFormParam(String name, String value) {
  resetNonMultipartData();
  resetMultipartData();
  if (request.formParams == null)
    request.formParams = new ArrayList<>(1);
  request.formParams.add(new Param(name, value));
  return derived.cast(this);
}