Convert to a numeric vector with names of the form 'a->b'
# S4 method for InternalFluxList_by_PoolName
as.numeric(x, y, t, time_symbol, ...)
The list of fluxes. Every element contains a function that depends on a combination of of state variables and time.
A vector indexed by the names of the state variables
a number representing the current point in time
The name of the time argument used in the definition of the flux functions
additional arguments