code: public WebServiceTemplateBuilder setDefaultUri(String defaultUri) {
  		Assert.hasText(defaultUri, "DefaultUri must not be empty");
  		return setDestinationProvider(() -> URI.create(defaultUri));
  	}
docs: Set the default URI to be used on operations that do not have a URI parameter.
  Typically, either this property is set, or
  {@link #setDestinationProvider(DestinationProvider)}, but not both.
  @param defaultUri the destination provider URI to be used on operations that do not
  have a URI parameter.
  @return a new builder instance.
  @see #setDestinationProvider(DestinationProvider)