$ javap -p org/testcontainers/postgresql/PostgreSQLContainer.class   # testcontainers-postgresql-2.0.5.jar
Compiled from "PostgreSQLContainer.java"
public class org.testcontainers.postgresql.PostgreSQLContainer extends org.testcontainers.containers.JdbcDatabaseContainer<org.testcontainers.postgresql.PostgreSQLContainer> {
  public static final java.lang.String NAME;
  public static final java.lang.String IMAGE;
  public static final java.lang.String DEFAULT_TAG;
  private static final org.testcontainers.utility.DockerImageName DEFAULT_IMAGE_NAME;
  private static final org.testcontainers.utility.DockerImageName PGVECTOR_IMAGE_NAME;
  public static final java.lang.Integer POSTGRESQL_PORT;
  static final java.lang.String DEFAULT_USER;
  static final java.lang.String DEFAULT_PASSWORD;
  private java.lang.String databaseName;
  private java.lang.String username;
  private java.lang.String password;
  private static final java.lang.String FSYNC_OFF_OPTION;
  public org.testcontainers.postgresql.PostgreSQLContainer(java.lang.String);
  public org.testcontainers.postgresql.PostgreSQLContainer(org.testcontainers.utility.DockerImageName);
  protected java.util.Set<java.lang.Integer> getLivenessCheckPorts();
  protected void configure();
  public java.lang.String getDriverClassName();
  public java.lang.String getJdbcUrl();
  public java.lang.String getDatabaseName();
  public java.lang.String getUsername();
  public java.lang.String getPassword();
  public java.lang.String getTestQueryString();
  public org.testcontainers.postgresql.PostgreSQLContainer withDatabaseName(java.lang.String);
  public org.testcontainers.postgresql.PostgreSQLContainer withUsername(java.lang.String);
  public org.testcontainers.postgresql.PostgreSQLContainer withPassword(java.lang.String);
  protected void waitUntilContainerStarted();
  public org.testcontainers.containers.JdbcDatabaseContainer withDatabaseName(java.lang.String);
  public org.testcontainers.containers.JdbcDatabaseContainer withPassword(java.lang.String);
  public org.testcontainers.containers.JdbcDatabaseContainer withUsername(java.lang.String);
  static {};
}

$ javap -p org/testcontainers/containers/PostgreSQLContainer.class   # SAME jar, deprecated shim
Compiled from "PostgreSQLContainer.java"
public class org.testcontainers.containers.PostgreSQLContainer<SELF extends org.testcontainers.containers.PostgreSQLContainer<SELF>> extends org.testcontainers.containers.JdbcDatabaseContainer<SELF> {
  public static final java.lang.String NAME;
  public static final java.lang.String IMAGE;
  public static final java.lang.String DEFAULT_TAG;
  private static final org.testcontainers.utility.DockerImageName DEFAULT_IMAGE_NAME;
  private static final org.testcontainers.utility.DockerImageName PGVECTOR_IMAGE_NAME;
  public static final java.lang.Integer POSTGRESQL_PORT;
  static final java.lang.String DEFAULT_USER;
  static final java.lang.String DEFAULT_PASSWORD;
  private java.lang.String databaseName;
  private java.lang.String username;
  private java.lang.String password;
  private static final java.lang.String FSYNC_OFF_OPTION;
  public org.testcontainers.containers.PostgreSQLContainer();
  public org.testcontainers.containers.PostgreSQLContainer(java.lang.String);
  public org.testcontainers.containers.PostgreSQLContainer(org.testcontainers.utility.DockerImageName);
  protected java.util.Set<java.lang.Integer> getLivenessCheckPorts();
  protected void configure();
  public java.lang.String getDriverClassName();
  public java.lang.String getJdbcUrl();
  public java.lang.String getDatabaseName();
  public java.lang.String getUsername();
  public java.lang.String getPassword();
  public java.lang.String getTestQueryString();
  public SELF withDatabaseName(java.lang.String);
  public SELF withUsername(java.lang.String);
  public SELF withPassword(java.lang.String);
  protected void waitUntilContainerStarted();
  public org.testcontainers.containers.JdbcDatabaseContainer withDatabaseName(java.lang.String);
  public org.testcontainers.containers.JdbcDatabaseContainer withPassword(java.lang.String);
  public org.testcontainers.containers.JdbcDatabaseContainer withUsername(java.lang.String);
  static {};
}

$ javap -v org/testcontainers/containers/PostgreSQLContainer.class | grep -i deprecated
    #7 = Utf8               Ljava/lang/Deprecated;
  #232 = Utf8               Deprecated
    Deprecated: true
        java.lang.Deprecated
    Deprecated: true