code: <T extends Entity<?, ?>> Builder<BE, T> proceedTo(Relationships.WellKnown over, Class<T> entityType) {
          return new Builder<>(this, hop(), Query.filter(), entityType).hop(Related.by(over), type(entityType));
      }
docs: The new context will have the source path composed by appending current select candidates to the current source
  path and its select candidates will filter for entities related by the provided relationship to the new sources
  and will have the provided type.
  
  @param over       the relationship with which the select candidates will be related to the entities on the source
  path
  @param entityType the type of the entities related to the entities on the source path
  @param <T>        the type of the "target" entities
  @return a context builder with the modified source path, select candidates and type