set method Null safety

void set(
  1. String name,
  2. dynamic value
)

Sets a header. The header named name will have all its values cleared before the value value is added as its value.

Implementation

void set(String name, dynamic value) {
  name = name.trim().toLowerCase();
  if (value is List) {
    _map[name] = value.map<String>((e) => e.toString()).toList();
  } else {
    _map[name] = [value.trim()];
  }
}