lARN": {       "base": null,       "refs": {         "AssociatePrincipalWithPortfolioInput$PrincipalARN": "<p>The ARN of the principal (IAM user, role, or group).</p>",         "DisassociatePrincipalFromPortfolioInput$PrincipalARN": "<p>The ARN of the principal (IAM user, role, or group).</p>",         "