@@ -134,7 +134,7 @@ class Observable(BaseModel):
134134
135135 @field_validator ("id" )
136136 @classmethod
137- def validate_id (cls , v ):
137+ def _validate_id (cls , v ):
138138 if not v :
139139 raise ValueError ("ID must not be empty." )
140140 if not is_valid_identifier (v ):
@@ -151,14 +151,14 @@ def validate_id(cls, v):
151151 mode = "before" ,
152152 )
153153 @classmethod
154- def convert_nan_to_default (cls , v , info : ValidationInfo ):
154+ def _convert_nan_to_default (cls , v , info : ValidationInfo ):
155155 if isinstance (v , float ) and np .isnan (v ):
156156 return cls .model_fields [info .field_name ].default
157157 return v
158158
159159 @field_validator ("formula" , "noise_formula" , mode = "before" )
160160 @classmethod
161- def sympify (cls , v ):
161+ def _sympify (cls , v ):
162162 if v is None or isinstance (v , sp .Basic ):
163163 return v
164164 if isinstance (v , float ) and np .isnan (v ):
@@ -258,7 +258,7 @@ class Change(BaseModel):
258258
259259 @model_validator (mode = "before" )
260260 @classmethod
261- def validate_id (cls , data : dict ):
261+ def _validate_id (cls , data : dict ):
262262 if (
263263 data .get ("operation_type" , data .get (C .OPERATION_TYPE ))
264264 != C .OT_NO_CHANGE
@@ -271,7 +271,7 @@ def validate_id(cls, data: dict):
271271
272272 @field_validator ("target_value" , mode = "before" )
273273 @classmethod
274- def sympify (cls , v ):
274+ def _sympify (cls , v ):
275275 if v is None or isinstance (v , sp .Basic ):
276276 return v
277277 if isinstance (v , float ) and np .isnan (v ):
@@ -297,7 +297,7 @@ class ChangeSet(BaseModel):
297297
298298 @field_validator ("id" )
299299 @classmethod
300- def validate_id (cls , v ):
300+ def _validate_id (cls , v ):
301301 if not v :
302302 raise ValueError ("ID must not be empty." )
303303 if not is_valid_identifier (v ):
@@ -394,7 +394,7 @@ class ExperimentPeriod(BaseModel):
394394
395395 @field_validator ("condition_id" )
396396 @classmethod
397- def validate_id (cls , condition_id ):
397+ def _validate_id (cls , condition_id ):
398398 if not condition_id :
399399 raise ValueError ("ID must not be empty." )
400400 if not is_valid_identifier (condition_id ):
@@ -421,7 +421,7 @@ class Experiment(BaseModel):
421421
422422 @field_validator ("id" )
423423 @classmethod
424- def validate_id (cls , v ):
424+ def _validate_id (cls , v ):
425425 if not v :
426426 raise ValueError ("ID must not be empty." )
427427 if not is_valid_identifier (v ):
@@ -531,7 +531,7 @@ def convert_nan_to_none(cls, v, info: ValidationInfo):
531531
532532 @field_validator ("observable_id" , "experiment_id" )
533533 @classmethod
534- def validate_id (cls , v , info : ValidationInfo ):
534+ def _validate_id (cls , v , info : ValidationInfo ):
535535 if not v :
536536 if info .field_name == "experiment_id" :
537537 return None
@@ -544,7 +544,7 @@ def validate_id(cls, v, info: ValidationInfo):
544544 "observable_parameters" , "noise_parameters" , mode = "before"
545545 )
546546 @classmethod
547- def sympify_list (cls , v ):
547+ def _sympify_list (cls , v ):
548548 if isinstance (v , float ) and np .isnan (v ):
549549 return []
550550 if isinstance (v , str ):
@@ -620,7 +620,7 @@ class Mapping(BaseModel):
620620 "petab_id" ,
621621 )
622622 @classmethod
623- def validate_id (cls , v ):
623+ def _validate_id (cls , v ):
624624 if not v :
625625 raise ValueError ("ID must not be empty." )
626626 if not is_valid_identifier (v ):
@@ -702,7 +702,7 @@ class Parameter(BaseModel):
702702
703703 @field_validator ("id" )
704704 @classmethod
705- def validate_id (cls , v ):
705+ def _validate_id (cls , v ):
706706 if not v :
707707 raise ValueError ("ID must not be empty." )
708708 if not is_valid_identifier (v ):
@@ -711,7 +711,7 @@ def validate_id(cls, v):
711711
712712 @field_validator ("lb" , "ub" , "nominal_value" )
713713 @classmethod
714- def convert_nan_to_none (cls , v ):
714+ def _convert_nan_to_none (cls , v ):
715715 if isinstance (v , float ) and np .isnan (v ):
716716 return None
717717 return v
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