rest-assured/src/main/java/io/restassured/specification/ProxySpecification.java
public static ProxySpecification auth(String username, String password) {
        AssertParameter.notNull(username, "username");
        AssertParameter.notNull(password, "password");
        return new ProxySpecification(DEFAULT_HOST, DEFAULT_PORT, DEFAULT_SCHEME, username, password);
    }
public static ProxySpecification auth(String username, String password) {
        AssertParameter.notNull(username, "username");
        AssertParameter.notNull(password, "password");
        return new ProxySpecification(DEFAULT_HOST, DEFAULT_PORT, DEFAULT_SCHEME, username, password);
    }
public static ProxySpecification auth ( String username , String password ) { AssertParameter . notNull ( username , "username" ) ; AssertParameter . notNull ( password , "password" ) ; return new ProxySpecification ( DEFAULT_HOST , DEFAULT_PORT , DEFAULT_SCHEME , username , password ) ; }
Specify preemptive basic authentication for the proxy. Will use hostname {@value #DEFAULT_HOST}, port {@value #DEFAULT_PORT} and scheme {@value #DEFAULT_SCHEME}.

@param username The username
@param password The username
@return A new ProxySpecification instance
Specify preemptive basic authentication for the proxy . Will use hostname { @value #DEFAULT_HOST } port { @value #DEFAULT_PORT } and scheme { @value #DEFAULT_SCHEME } .