Handle State Updating for the trivial X-Module

The trivial model has no state variables so it returns a numeric vector of length 0

Usage

# S3 method for class 'trivial'
Update_XHt(t, y, xds_obj, i)

Arguments

t

current simulation time

y

state vector

xds_obj

an xds model object

i

the host species index

Value

a numeric vector