def parse_objective_coefficient(entry):
for parameter in entry.kinetic_law_reaction_parameters:<EOL><INDENT>pid, name, value, units = parameter<EOL>if (pid == '<STR_LIT>' or<EOL>name == '<STR_LIT>'):<EOL><INDENT>return value<EOL><DEDENT><DEDENT>return None<EOL>
Return objective value for reaction entry.

    Detect objectives that are specified using the non-standardized
    kinetic law parameters which are used by many pre-FBC SBML models. The
    objective coefficient is returned for the given reaction, or None if
    undefined.

    Args:
        entry: :class:`SBMLReactionEntry`.