The relationship method on a undefined method should return an alias of the relation type about red HOT 8 CLOSED

model Post {
   has UInt   $!author-id is referencing{ Person.id };
   has Person @.author    is relationship{ .author-id };
}

Post.author;             # returns a Person::ResultSeq :of() an alias named author
Post.author.map( *.id ); # Seq of UInt

Post.all.grep: { .author.name eq “FCO” };

Post.new.author;         # returns a Person::ResultSet

Person.all                            # returns an Person::ResultSeq (:of(Person))
   .grep({ .name.starts-with("F") })  # adds an "WHERE name like 'F%'" on the query
                                      # and return another Person::ResultSeq
   .flatmap( *.posts )                # now it returns a Post::ResultSeq
                                      # adding a join with the Person
   .grep( *.title.chars == 5 )        # adds "WHERE LENGTH(title) = 5"
   .map( *.body )                     # returns an Red::Default::ResultSeq of Str
                                      # Str doesn't Model, so the next call
                                      # will run the query
   .elems
;