{
  "responseHeader":{
    "status":0,
    "QTime":1,
    "params":{
      "q":"*:*",
      "facet.limit":"3000",
      "facet.field":"is_defined_by",
      "indent":"on",
      "facet.mincount":"1",
      "fq":"association_type:case_disease",
      "rows":"0",
      "wt":"json",
      "facet":"true",
      "facet.sort":"count"}},
  "response":{"numFound":0,"start":0,"docs":[]
  },
  "facet_counts":{
    "facet_queries":{},
    "facet_fields":{
      "is_defined_by":[]},
    "facet_ranges":{},
    "facet_intervals":{},
    "facet_heatmaps":{}}}