private void doAddHeaderValue(String name, Object value, boolean replace) {
HeaderValueHolder header = HeaderValueHolder.getByName(this.headers, name);
Assert.notNull(value, "Header value must not be null");
if (header == null) {
header = new HeaderValueHolder();
this.headers.put(name, header);
}
if (replace) {
header.setValue(value);
} else {
header.addValue(value);
}
}
