          %%{init: { 'theme':'base', '__proto__': {'polluted': 'asdf'}} }%%
          graph LR
              A --> B

          %%{init: { 'theme':'base', '__proto__': {'polluted': 'asdf'}} }%%
          %%{init: { 'theme':'base', '__proto__': {'polluted': 'asdf'}} }%%
          graph LR
              A --> B

          %%{init: { 'prototype': {'__proto__': {'polluted': 'test'}}} }%%
          %%{init: { 'prototype': {'__proto__': {'polluted': 'test'}}} }%%
          sequenceDiagram
          Alice->>Bob: Hi Bob
          Bob->>Alice: Hi Alice