nullable types in anomaly cause, missing field (#3707) (#3717)

(cherry picked from commit 7c6161b)

Co-authored-by: Laura Trotta <[email protected]>

Author: l-trotta

output/schema/schema.json

@@ -47,23 +47,78 @@ export class Anomaly {
 }
 
 export class AnomalyCause {
-  actual: double[]
-  by_field_name: Name
-  by_field_value: string
-  correlated_by_field_value: string
-  field_name: Field
-  function: string
-  function_description: string
-  influencers: Influence[]
-  over_field_name: Name
-  over_field_value: string
-  partition_field_name: string
-  partition_field_value: string
+  actual?: double[]
+  by_field_name?: Name
+  by_field_value?: string
+  correlated_by_field_value?: string
+  field_name?: Field
+  function?: string
+  function_description?: string
+  geo_results?: GeoResults
+  influencers?: Influence[]
+  over_field_name?: Name
+  over_field_value?: string
+  partition_field_name?: string
+  partition_field_value?: string
   probability: double
-  typical: double[]
+  typical?: double[]
 }
 
 export class Influence {
   influencer_field_name: string
   influencer_field_values: string[]
 }
+
+export class GeoResults {
+  /**
+   * The actual value for the bucket formatted as a `geo_point`.
+   */
+  actual_point?: string
+  /**
+   * The typical value for the bucket formatted as a `geo_point`.
+   */
+  typical_point?: string
+}
+
+export class AnomalyExplanation {
+  /**
+   * Impact from the duration and magnitude of the detected anomaly relative to the historical average.
+   */
+  anomaly_characteristics_impact?: integer
+  /**
+   * Length of the detected anomaly in the number of buckets.
+   */
+  anomaly_length?: integer
+  /**
+   * Type of the detected anomaly: `spike` or `dip`.
+   */
+  anomaly_type?: string
+  /**
+   * Indicates reduction of anomaly score for the bucket with large confidence intervals. If a bucket has large confidence intervals, the score is reduced.
+   */
+  high_variance_penalty?: boolean
+  /**
+   * If the bucket contains fewer samples than expected, the score is reduced.
+   */
+  incomplete_bucket_penalty?: boolean
+  /**
+   * Lower bound of the 95% confidence interval.
+   */
+  lower_confidence_bound?: double
+  /**
+   * Impact of the deviation between actual and typical values in the past 12 buckets.
+   */
+  multi_bucket_impact?: integer
+  /**
+   * Impact of the deviation between actual and typical values in the current bucket.
+   */
+  single_bucket_impact?: integer
+  /**
+   * Typical (expected) value for this bucket.
+   */
+  typical_value?: double
+  /**
+   * Upper bound of the 95% confidence interval.
+   */
+  upper_confidence_bound?: double
+}