Fix graph.explore Hop definition

Author: flobernd

specification/graph/_types/Hop.ts

@@ -24,13 +24,28 @@ export class Hop {
   /**
    * Specifies one or more fields from which you want to extract terms that are associated with the specified vertices.
    */
-  connections?: Hop
+  connections?: NextHop
   /**
-   * An optional guiding query that constrains the Graph API as it explores connected terms.
+   * A seed query that identifies the documents of interest.
    */
   query: QueryContainer
   /**
    * Contains the fields you are interested in.
    */
   vertices: VertexDefinition[]
 }
+
+export class NextHop {
+  /**
+   * Specifies one or more fields from which you want to extract terms that are associated with the specified vertices.
+   */
+  connections?: NextHop
+  /**
+   * An optional guiding query that constrains the Graph API as it explores connected terms.
+   */
+  query?: QueryContainer
+  /**
+   * Contains the fields you are interested in.
+   */
+  vertices: VertexDefinition[]
+}