using where argument from contentful

Question

I need to query related content-types. I understand I can use "linkFrom". However, I am unable to use the where argument on the entries that are "linked from" another entry. So, I can do the following.

   postCollection(limit: 1, skip: 1, where: {some_value: true}) {
          items {
            name
          }
        }

However, if I need to extend my query and use linkedFrom. I get an "unknown argument on field" where.

  {
      tagsCollection(where: {name: "foo"}) {
        items {
          linkedFrom {
            postCollection(limit: 1, skip: 1, where: {some_value: true}) {
              items {
                name
              }
            }
          }
        }
      }    
}

I think the issue is that I need to define what type "linkedFrom" is expecting so that it can resolve the where argument. I'm unsure where this would reside.