correct null handling for Deviation object in API

Author: mfleisch

sirius_rest_service/openapi-spec-enums-as-ref.json

@@ -9454,7 +9454,8 @@
             "type": "number",
             "format": "double"
           }
-        }
+        },
+        "nullable": true
       },
       "LcmsSubmissionParameters": {
         "type": "object",

sirius_rest_service/openapi-spec-enums-as-string.json

@@ -9882,7 +9882,8 @@
             "type": "number",
             "format": "double"
           }
-        }
+        },
+        "nullable": true
       },
       "LcmsSubmissionParameters": {
         "type": "object",

sirius_rest_service/src/main/java/de/unijena/bioinf/ms/middleware/model/compute/LcmsSubmissionParameters.java

@@ -55,15 +55,15 @@ public class LcmsSubmissionParameters {
     /**
      * Maximal allowed mass deviation for peaks in ms1 to be considered as belonging to the same trace.
      */
-    @Schema(requiredMode = Schema.RequiredMode.NOT_REQUIRED, defaultValue = "null")
+    @Schema(requiredMode = Schema.RequiredMode.NOT_REQUIRED, nullable = true)
     @JsonSerialize(using = ToStringSerializer.class)
     @JsonDeserialize(using = SimpleSerializers.DeviationDeserializer.class)
     protected Deviation traceMaxMassDeviation = null;
 
     /**
      * Maximal allowed mass deviation for aligning features. If not specified, this parameter is estimated from data.
      */
-    @Schema(requiredMode = Schema.RequiredMode.NOT_REQUIRED, defaultValue = "null")
+    @Schema(requiredMode = Schema.RequiredMode.NOT_REQUIRED, nullable = true)
     @JsonSerialize(using = ToStringSerializer.class)
     @JsonDeserialize(using = SimpleSerializers.DeviationDeserializer.class)
     protected Deviation alignMaxMassDeviation = null;