You are reading the documentation for SDK v2, which is no longer the latest version. Switch to current
MutationCustomerChangePasswordArgs
export type MutationCustomerChangePasswordArgs = {
id: Scalars['String'];
version: Scalars['Long'];
currentPassword: Scalars['String'];
newPassword: Scalars['String'];
storeKey?: InputMaybe<Scalars['KeyReferenceInput']>;
};