Handle SBML "time"
<csymbol encoding="text" definitionURL="http://www.sbml.org/sbml/symbols/time">
t
</csymbol>
We thus need math = KineticLaw_getMath()
, iterate on ASTNode_getNumChildren(math)
and ASTNode_getChild(math, n)
And check ASTNode_getType
for AST_NAME_TIME
…