Returns a named logical list indicating which of the four required
components (species parameters, temperature, diet, initial weight) are
present in a Bioenergetic object. Centralises the readiness
check that is otherwise duplicated across print.Bioenergetic and
summary.Bioenergetic.
check_bioenergetic_readiness(x)Named logical list with elements has_params,
has_temp, has_diet, and has_initial.
A Bioenergetic object.