src/main/java/org/fest/assertions/api/StringAssert.java
public @Nonnull
  StringAssert startsWith(@Nonnull String prefix) {
    strings.assertStartsWith(description, actual, prefix);
    return this;
  }
public @Nonnull
  StringAssert startsWith(@Nonnull String prefix) {
    strings.assertStartsWith(description, actual, prefix);
    return this;
  }
Verifies that the <em>actual</em> {@code String} starts with the given prefix.

@param prefix the given prefix.
@return {@code this} assertion object.
@throws NullPointerException if the given prefix is {@code null}.
@throws AssertionError if the <em>actual</em> {@code String} is {@code null}.
@throws AssertionError if the <em>actual</em> {@code String} does not start with the given prefix.