grantCapability method

void grantCapability(
  1. String principalId,
  2. String channelId,
  3. String capability
)

Gives principalId the capability capability (API Capability) in channelId.

Implementation

void grantCapability(
  String principalId,
  String channelId,
  String capability,
) => channels[channelId]!.capabilities
    .putIfAbsent(principalId, () => {})
    .add(capability);