@interface TRIExpressionValidator : NSObject - (BOOL)_validSystemCovariateFunction:(id)a0; - (BOOL)_validUserCovariateFunction:(id)a0; - (id)_validationErrorWithDetails:(id)a0; - (BOOL)validateExpression:(id)a0 outError:(id *)a1; - (BOOL)validatePredicate:(id)a0 outError:(id *)a1; @end