@underlying_bond_coupon.setter<EOL><INDENT>def underlying_bond_coupon(self, underlying_bond_coupon):<DEDENT>
if underlying_bond_coupon is not None:<EOL><INDENT>self._underlying_bond_coupon = Decimal(underlying_bond_coupon)<EOL><DEDENT>
The coupon paid out by the underlying bond.  Represented as a fraction of 1 (e.g. 0.05 is 5%).
:param underlying_bond_coupon:
:return: