Spring Security-配置类| AuthenticationManagerBuilder

Question

I am trying to configure class that extends WebSecurityConfigurerAdapter.

class SecurityConfig extends WebSecurityConfigurerAdapter {
}

and in the class I have such defined function:

   @Override
   protected void configure(AuthenticationManagerBuilder auth) throws Exception 
   {        
   auth.inMemoryAuthentication()
   .withUser("poef").password("fump")
   .roles("ACTUATOR ");
   }

My source is HERE My problem in understanding is in the beginning of this statement:

.withUser("poef")

I don't see in doccumentation this function(withUser). Where it does come from the following statements.

Answer 1

The method auth.inMemoryAuthentication() returns an InMemoryUserDetailsManagerConfigurer , which, in turn, derives from UserDetailsManagerConfigurer that provides the withUser() method.

The withUser() returns a UserDetailsManagerConfigurer.UserDetailsBuilder that provides the password(..) method.