Fix NPE in DefaultTypeManager.keepSource() when no ebean-jackson-mapper to default mutation detection to NONE#3800
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…er to default mutation detection to NONE Otherwise, can produce NullPointerException: `` Caused by: java.lang.NullPointerException at io.ebeaninternal.server.type.DefaultTypeManager.keepSource(DefaultTypeManager.java:340) at io.ebeaninternal.server.type.DefaultTypeManager.dbJsonType(DefaultTypeManager.java:327) at io.ebeaninternal.server.deploy.parse.DeployUtil.setDbJsonType(DeployUtil.java:207) at io.ebeaninternal.server.deploy.parse.DeployUtil.setDbJsonBType(DeployUtil.java:201) at io.ebeaninternal.server.deploy.parse.AnnotationFields.initDbJson(AnnotationFields.java:227) at io.ebeaninternal.server.deploy.parse.AnnotationFields.readField(AnnotationFields.java:133) at io.ebeaninternal.server.deploy.parse.AnnotationFields.parse(AnnotationFields.java:62) at io.ebeaninternal.server.deploy.parse.ReadAnnotations.readInitial(ReadAnnotations.java:29) ... ``
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Otherwise, can produce NullPointerException:
Caused by: java.lang.NullPointerException at io.ebeaninternal.server.type.DefaultTypeManager.keepSource(DefaultTypeManager.java:340) at io.ebeaninternal.server.type.DefaultTypeManager.dbJsonType(DefaultTypeManager.java:327) at io.ebeaninternal.server.deploy.parse.DeployUtil.setDbJsonType(DeployUtil.java:207) at io.ebeaninternal.server.deploy.parse.DeployUtil.setDbJsonBType(DeployUtil.java:201) at io.ebeaninternal.server.deploy.parse.AnnotationFields.initDbJson(AnnotationFields.java:227) at io.ebeaninternal.server.deploy.parse.AnnotationFields.readField(AnnotationFields.java:133) at io.ebeaninternal.server.deploy.parse.AnnotationFields.parse(AnnotationFields.java:62) at io.ebeaninternal.server.deploy.parse.ReadAnnotations.readInitial(ReadAnnotations.java:29) ...