docs: public BeanBox injectValue(String fieldName, Object constValue) {
  		checkOrCreateFieldInjects();
  		Field f = ReflectionUtils.findField(beanClass, fieldName);
  		BeanBox inject = new BeanBox();
  		inject.setTarget(constValue);
  		inject.setType(f.getType());
  		inject.setPureValue(true);
  		ReflectionUtils.makeAccessible(f);
  		this.getFieldInjects().put(f, inject);
  		return this;
  	}