In Di Corpo v. Di Corpo (1948) 33 Cal.2d, the court affirmed the denial of a writ of execution to enforce a child support order for failure of the divorced wife to diligently locate her ex-husband's property within five years (now ten years Code Civ. Proc., 685) of the judgment. In answer to the argument that the children should not be punished for their mother's lack of diligence, the court said: "Since, however, she has presumably supported the children out of her own funds since 1931, she is seeking, not funds for the current support of the children, but reimbursement for funds she has already expended for their support." ( Id., at p. 200.)