toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (byproducts != null) 'byproducts': byproducts!,
if (command != null) 'command': command!,
if (environment != null) 'environment': environment!,
if (materials != null) 'materials': materials!,
if (products != null) 'products': products!,
};