@SuppressWarnings("unused")
  @Deprecated
  public RequestTemplate insert(int pos, CharSequence value) {
    return target(value.toString());
  }
Insert the value at the specified point in the template uri.

<p>This method is poorly named has undocumented behavior. When the value contains a fully
qualified http request url, the value is always inserted at the beginning of the uri.

<p>Due to this, use of this method is not recommended and remains for backward compatibility.
It has been replaced by {@link RequestTemplate#target(String)} and will be removed in a future
release.

@param pos in the uri to place the value.
@param value to insert.
@return a RequestTemplate for chaining.
@deprecated see {@link RequestTemplate#target(String)}
core/src/main/java/feign/RequestTemplate.java