Please include the root cause in the exception message in com.zitadel.ApiException class.
Currently, com.zitadel.ApiException.getMessage() returns a concatenation of "Error " and status code; the error returned is "Error 400", which is the HTTP status code for a bad client request.

For example, if I provide an invalid organisation name criterion for a search request that exceeds 200 characters, the root cause can be found in the response body, which contains the following content for the above example:
{"code": "invalid_argument", "message": "invalid ListOrganizationsRequest.Queries[0]: embedded message failed validation | caused by: invalid SearchQuery.NameQuery: embedded message failed validation | caused by: invalid OrganizationNameQuery.Name: value length must be between 1 and 200 runes, inclusive"}.

A more user-friendly error message from com.zitadel.ApiException.getMessage(): "Error 400: invalid OrganizationNameQuery.Name: value length must be between 1 and 200 runes, inclusive"